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ECAT Pre General Science Mathematics Chapter 24 Vectors Online Test MCQs With Answers
Question # 1
The ortho center of triangle whose vertices are (0,0)(3,0)(0,4) is
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(0,0)
(1,1)
(2,2)
(3,3)
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Question # 2
The magnitude of a vector can never be
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Zero
Negative
Positive
None of these
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Question # 3
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0
90°
180°
360°
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Question # 4
If the vector 2i + 4j - 7k and 2i + 6j + xk are perpendicular then x = ?
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0
2
4
7
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Question # 5
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A
0
Unit vector
None
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Question # 6
Which of the following is a scalar
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weight
force
speed
momentum
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Question # 7
If |αi + (α+1)j +2k| =3 then value of α is
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1,2
-1,-2
1,-2
-1,2
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Question # 8
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Question # 9
The physical quantity which possesses both magnitude and direction is called a
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scalar
vector
constant
none of these
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Question # 10
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none of these
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Question # 11
Which of the following is a vector
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length
momentum
volume
speed
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Question # 12
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0
1
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Question # 13
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[0, 0, 0]
[1, 0, 0]
[0, 1, 0]
[0, 0, 1]
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Question # 14
The unit vector along x-axis is
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none of these
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Question # 15
The position vector of a point (x, y) in xy plane is
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none of these
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Question # 16
The zero vector is regarded to be parallel to
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Every vector
Is some cases
Both a,b
None
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Question # 17
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Question # 18
If |a x b|2 + (a,b)2 = _____
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|a|2 + |b|2
|a|2- |b|2
|a|2|b|2
None
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Question # 19
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Question # 20
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Question # 21
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Question # 22
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l
2
+ m
2
+ n
2
= 0
l
2
- m
2
+ n
2
= 1
l
2
+ m
2
+ n
2
= 1
l
2
+ m
2
- n
2
= 0
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Question # 23
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Question # 24
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none of these
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Question # 25
Three points whose position vector a,b,c are collinear
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axb +b x c+ c x a = 0
a,b +b,c +c,a =0
a,|a xc| =0
a+b+c =0
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Question # 26
3j . k x i
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0
1
3
9
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Question # 27
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direction ratios
direction cosines
direction angles
none of these
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Question # 28
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0
1
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Question # 29
If Projvu = Projuv, then
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Uand vare parallel
|u|=|v|
Uandvre perpendicular
One ofuorv
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Question # 30
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none of these
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Question # 31
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none of these
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